and Drive / Laser~Pickup / KHM-313AAM / KHM-313AAM / KHM-313AAM / Laser~ unit (optical pick up), Laser~ head (Laser~ lense), Laser~ lens (laser~ unit) Important customer information: In day-to-day repairs, it is sometimes not easy to see whether the cause of the fault is to be found in the defective ~laser or elsewhere. Especially when the spare part has been renewed and the desired success does not occur. Therefore, please note the following points before installation: 1. Remove any short-circuit that may be present. 2. Avoid damage from your own electrostatic charge. 3. In the event of problems, carry out a device adjustment according to the manufacturer's specifications. 1. ~Laser head installation knowledge 1 How to judge the damage of the ~Laser head: The damage of the ~Laser head generally shows that it does not read the disk or it is very difficult to read the disk. Discs with poorer quality cannot be read at all. When the device can recognize the machine normally, it is usually a shock. The problem of the bald head, when the above situation occurs, you only need to disassemble the machine to check the model of the ~Laser head, and then buy the corresponding model Put the bald head on, and the machine can be restored as new. 2. How to judge the model of the ~Laser head: Generally, there is a model on the label of the ~Laser head or on the base, such as If not, please send us the picture taken by the bald head, and we will have professional and technical personnel to confirm the model for you. Please Confirm the model of the ~Laser head you need before buying to avoid accidental shooting. 3. How to install the ~Laser head: When installing the ~Laser head on the shelf, do not move the balance bar on the shelf. Being demolished When removing the l~Laser head, you only need to adjust the screws on one side of the balance bar, and do not adjust the other side, so as not to affect the leveling. Otherwise, the ~Laser head may not read the disc. If you can't install it yourself, you can ask a professional to test the installation after purchase. Install, so as not to cause damage to the ~Laser head and the machine. 4How to open the solder joints When the ~Laser head is shipped from the factory, in order to prevent static electricity from damaging the ~Lasertube, there are generally protective solder joints. (There is a larger solder joint on the bald circuit board or on the flexible cable) Short circuit the power supply pin of the ~Laser tube to the ground, Before installing the bald head, it needs to be soldered with an anti-static soldering iron, and the electric soldering iron is heated to about 250 degrees Celsius-280 degrees Celsius Disconnect the power supply, and then open the protection point, otherwise the ~Laser head will be unusable. Specifications: Use: Computer Model number: KHS-313A / KHS-313AAM Wireless communication: Wire Control note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1x Laser~ unit Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.